Abstract
In this paper, we report the synthesis of tetragonal zirconium oxysulfide t-ZrOS nanopowder by the sol–gel method using water solution of a precursor containing thiourea [CS(NH2)2] and zirconium in the form of an anionic oxalate complex [Zr(C2O4)]4−. The tetragonal t-ZrOS structure with space group P4/nmm revealed by X-ray patterns showed preferred orientation along (101) plane. For surface morphology, compositional and optical absorption studies, scanning electron microscopy, energy dispersive X-ray and ultraviolet–visible spectroscopy were employed for characterization of the powder respectively. A nearly constant value of the refractive index at higher wavelength λ ≥ 1,100 nm was found to be 2.19. High indirect and direct optical band gap of ~2.0 and 2.50 eV with absorbance <40 % were obtained for the powder.
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Uduh, U.C., Obodo, R.M., Esaenwi, S. et al. Sol–gel synthesis, optical and structural characterization of ZrOS nanopowder. J Sol-Gel Sci Technol 71, 79–85 (2014). https://doi.org/10.1007/s10971-014-3331-7
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DOI: https://doi.org/10.1007/s10971-014-3331-7